Is this a common issue?

2 years ago I was a heavy drinker per se: I would drink about a full bottle of 100 Proof Vodka with sprite. I never drank to the point of blacking out, only till I was dizzy and warm in the face. One day a couple weeks later I got Covid; suddenly after I recovered from it, I became allergic to alcohol in a sense. Not severe, more like my intestinal track absolutely will not tolerate even a sip of alcohol. I tested this theory with both beer and gin: both just a sip, next day I was hurting bad in my abdomen and exhibiting IBS symptoms of which I won’t detail for TMI purposes.

Is this a normal occcurence in some people? Has something happened to my body as a result of drinking?